✨ : add stop job

src/main/java/io/codeka/gaia/bo/StackState.java

@@ -21,13 +21,8 @@ public enum StackState {
     TO_UPDATE,
 
     /**
-     * When the stack has been destroyed
+     * When the stack has been stopped
      */
-    DESTROYED,
-
-    /**
-     * When the stack is not visible anaymore
-     */
-    ARCHIVED
+    STOPPED
 
 }

src/main/java/io/codeka/gaia/controller/StackController.java

@@ -127,4 +127,30 @@ public Job getJob(@PathVariable String stackId, @PathVariable String jobId){
         return this.stackRunner.getJob(jobId);
     }
 
+    @GetMapping("/stacks/{stackId}/stop")
+    public String stopStack(@PathVariable String stackId, Model model){
+        // checking if the stack exists
+        // TODO throw an exception (404) if not
+        if(stackRepository.existsById(stackId)){
+            model.addAttribute("stackId", stackId);
+        }
+
+        // create a new job
+        var job = new Job();
+        job.setId(UUID.randomUUID().toString());
+        job.setStackId(stackId);
+        job.setDateTime(LocalDateTime.now());
+
+        model.addAttribute("jobId", job.getId());
+
+        // get the stack
+        var stack = this.stackRepository.findById(stackId).get();
+        // get the module
+        var module = this.terraformModuleRepository.findById(stack.getModuleId()).get();
+
+        this.stackRunner.stop(job, module, stack);
+
+        return "job";
+    }
+
 }

src/main/java/io/codeka/gaia/runner/StackCommandBuilder.java

@@ -93,6 +93,41 @@ String buildPlanScript(Stack stack, TerraformModule module){
         return String.join("\n", commands.toArray(new String[]{}));
     }
 
+    /**
+     * builds the terraform destroy script
+     * @return
+     */
+    String buildDestroyScript(Stack stack, TerraformModule module){
+        var backendGenCommand = String.format("echo \"terraform {\n" +
+                "    backend \\\"http\\\" {\n" +
+                "\t\taddress=\\\""+settings.getExternalUrl()+"/api/state/%s\\\"\n" +
+                "\t}\n" +
+                "}\n\" > backend.tf", stack.getId());
+
+        String destroyCommand = buildDestroyCommand(stack, module);
+
+        System.out.println(destroyCommand);
+
+        var commands = new LinkedList<>(List.of(
+                "set -ex",
+                String.format("git clone %s module", module.getGitRepositoryUrl()),
+                "cd module"));
+
+        if(module.getDirectory() != null && !module.getDirectory().isBlank()) {
+            commands.add(String.format("cd %s", module.getDirectory()));
+        }
+
+        commands.addAll(List.of(
+                "echo 'generating backend configuration'",
+                backendGenCommand,
+                "cat backend.tf",
+                "terraform version",
+                "terraform init",
+                destroyCommand));
+
+        return String.join("\n", commands.toArray(new String[]{}));
+    }
+
     String buildApplyCommand(Stack stack, TerraformModule module) {
         var varFormatString = "-var \"%s=%s\" ";
         var variablesBuilder = new StringBuilder();
@@ -129,4 +164,22 @@ String buildPlanCommand(Stack stack, TerraformModule module) {
         return String.format("terraform plan -detailed-exitcode %s", variablesBuilder.toString());
     }
 
+    String buildDestroyCommand(Stack stack, TerraformModule module) {
+        var varFormatString = "-var \"%s=%s\" ";
+        var variablesBuilder = new StringBuilder();
+
+        module.getVariables().forEach(terraformVariable -> {
+
+            var name = terraformVariable.getName();
+            String value = terraformVariable.getDefaultValue();
+            // try getting the value from the stack
+            if(stack.getVariableValues().containsKey(name)){
+                value = stack.getVariableValues().get(name);
+            }
+            variablesBuilder.append(String.format(varFormatString, name, value));
+        });
+
+        return String.format("terraform destroy --auto-approve %s", variablesBuilder.toString());
+    }
+
 }

src/main/java/io/codeka/gaia/runner/StackRunner.java

@@ -199,4 +199,36 @@ public Job getJob(String jobId) {
         // or find in repository
         return this.jobRepository.findById(jobId).get();
     }
+
+    /**
+     * Runs a "stop job".
+     * A stop job runs a 'terraform destroy'
+     * @param job
+     * @param module
+     * @param stack
+     */
+    @Async
+    public void stop(Job job, TerraformModule module, Stack stack) {
+        this.jobs.put(job.getId(), job);
+        job.start();
+
+        var destroyScript = stackCommandBuilder.buildDestroyScript(stack, module);
+
+        var result = runContainerForJob(job, destroyScript);
+
+        if(result == 0){
+            job.end();
+            // update state
+            stack.setState(StackState.STOPPED);
+            stackRepository.save(stack);
+        } else{
+            // error
+            job.fail();
+        }
+
+        // save job to database
+        jobRepository.save(job);
+        this.jobs.remove(job.getId());
+    }
+
 }

src/main/resources/templates/stack.html

@@ -44,11 +44,12 @@
         <div class="full">
             <div class="page_title">
                 <a href="#" class="btn btn-primary" @click="save"><i class="far fa-save"></i> Save</a>
-                <a :href="'/stacks/' + stack.id + '/apply'" v-if="stack.state === 'NEW'" class="btn btn-primary"><i class="fas fa-rocket"></i> Run</a>
+                <a :href="'/stacks/' + stack.id + '/apply'" v-if="stack.state === 'NEW' || stack.state === 'STOPPED'" class="btn btn-primary"><i class="fas fa-rocket"></i> Run</a>
                 <a :href="'/stacks/' + stack.id + '/apply'" v-if="stack.state === 'TO_UPDATE'" class="btn btn-warning"><i class="fas fa-upload"></i> Update</a>
 
-                <a :href="'/stacks/' + stack.id + '/preview'" v-if="stack.state === 'NEW' || stack.state === 'TO_UPDATE'" class="btn btn-info"><i class="fas fa-binoculars"></i> Preview</a>
+                <a :href="'/stacks/' + stack.id + '/preview'" v-if="stack.state !== 'RUNNING'" class="btn btn-info"><i class="fas fa-binoculars"></i> Preview</a>
 
+                <a :href="'/stacks/' + stack.id + '/stop'" v-if="stack.state === 'RUNNING' || stack.state === 'TO_UPDATE'" class="btn btn-danger"><i class="fas fa-stop-circle"></i> Stop</a>
             </div>
         </div>
     </div>
@@ -92,7 +93,7 @@ <h2>
                             <span class="badge badge-pill badge-success" v-if="stack.state === 'NEW'" data-toggle="tooltip" title="Your stack is new and has not been started yet."><i class="fas fa-star-of-life"></i> new</span>
                             <span class="badge badge-pill badge-primary" v-if="stack.state === 'RUNNING'" data-toggle="tooltip" title="Your stack is up and running !"><i class="far fa-check-square"></i> running</span>
                             <span class="badge badge-pill badge-warning" v-if="stack.state === 'TO_UPDATE'" data-toggle="tooltip" title="Your stack needs an update !"><i class="fas fa-upload"></i> to update</span>
-                            <span class="badge badge-pill badge-danger" v-if="stack.state === 'DESTROYED'" data-toggle="tooltip" title="Your stack has been destroyed."><i class="fas fa-snowplow"></i> destroyed</span>
+                            <span class="badge badge-pill badge-danger" v-if="stack.state === 'STOPPED'" data-toggle="tooltip" title="Your stack has been stopped."><i class="fas fa-stop-circle"></i> stopped</span>
                         </h2>
                     </div>
                     <div class="block_content">

src/main/resources/templates/stacks.html

@@ -46,7 +46,7 @@ <h4>
                     <span class="badge badge-pill badge-success" v-if="stack.state === 'NEW'" data-toggle="tooltip" title="Your stack is new and has not been started yet."><i class="fas fa-star-of-life"></i> new</span>
                     <span class="badge badge-pill badge-primary" v-if="stack.state === 'RUNNING'" data-toggle="tooltip" title="Your stack is up and running !"><i class="far fa-check-square"></i> running</span>
                     <span class="badge badge-pill badge-warning" v-if="stack.state === 'TO_UPDATE'" data-toggle="tooltip" title="Your stack needs an update !"><i class="fas fa-upload"></i> to update</span>
-                    <span class="badge badge-pill badge-danger" v-if="stack.state === 'DESTROYED'" data-toggle="tooltip" title="Your stack has been destroyed."><i class="fas fa-snowplow"></i> destroyed</span>
+                    <span class="badge badge-pill badge-danger" v-if="stack.state === 'STOPPED'" data-toggle="tooltip" title="Your stack has been stopped."><i class="fas fa-stop-circle"></i> stopped</span>
                 </h4>
                 <a :href="'/stacks/' + stack.id" data-toggle="tooltip" title="Edit this stack" class="btn btn-primary"><i class="far fa-edit"></i></a>
             </div>

src/test/java/io/codeka/gaia/runner/StackCommandBuilderTest.java

@@ -136,6 +136,32 @@ void buildPlanScript_shouldGenerateAFullScript_forAModuleWithoutDirectory(){
         assertTrue(script.contains("terraform version\nterraform init\nterraform plan"));
     }
 
+    @Test
+    void buildDestroyScript_shouldGenerateAFullScript(){
+        var stackCommandBuilder = new StackCommandBuilder(new Settings());
+
+        TerraformModule module = moduleWithDirectory();
+
+        var stack = new Stack();
+        var script = stackCommandBuilder.buildDestroyScript(stack, module);
+
+        assertTrue(script.contains("git clone git://test module\ncd module\ncd directory\necho 'generating backend configuration'"));
+        assertTrue(script.contains("terraform version\nterraform init\nterraform destroy"));
+    }
+
+    @Test
+    void buildDestroyScript_shouldGenerateAFullScript_forAModuleWithoutDirectory(){
+        var stackCommandBuilder = new StackCommandBuilder(new Settings());
+
+        TerraformModule module = moduleWithoutDirectory();
+
+        var stack = new Stack();
+        var script = stackCommandBuilder.buildDestroyScript(stack, module);
+
+        assertTrue(script.contains("git clone git://test module\ncd module\necho 'generating backend configuration'"));
+        assertTrue(script.contains("terraform version\nterraform init\nterraform destroy"));
+    }
+
     @NotNull
     private TerraformModule moduleWithDirectory() {
         var module = new TerraformModule();